I cloned and installed the sdk from github (OS is Linux Mint), but got a fatal error trying to update feeds. It complains about missing remote branch develop:
./sdk/1806/ramips$ ./scripts/feeds update -a
Updating feed ‘base’ from ‘https://github.com/gl-inet/openwrt.git;develop’ …
Cloning into ‘./feeds/base’…
warning: Could not find remote branch develop to clone.
fatal: Remote branch develop not found in upstream origin
failed.
Updating feed ‘gli_pub’ from ‘GitHub - gl-inet/gli-pub: Packages are missing in openwrt feeds or more stable version for GL.iNet firmware.’ …
Already up to date.
Create index file ‘./feeds/gli_pub.index’
Updating feed ‘packages’ from ‘https://git.openwrt.org/feed/packages.git^35e0b737ab496f5b51e80079b0d8c9b442e223f5’ …
Create index file ‘./feeds/packages.index’
Updating feed ‘luci’ from ‘https://git.openwrt.org/project/luci.git^f64b1523447547032d5280fb0bcdde570f2ca913’ …
Create index file ‘./feeds/luci.index’
Updating feed ‘routing’ from ‘https://git.openwrt.org/feed/routing.git^1b9d1c419f0ecefda51922a7845ab2183d6acd76’ …
Create index file ‘./feeds/routing.index’
Updating feed ‘telephony’ from ‘https://git.openwrt.org/feed/telephony.git^b9d7b321d15a44c5abb9e5d43a4ec78abfd9031b’ …
Create index file ‘./feeds/telephony.index’